fix: 플레이어 접촉 이동과 타깃 표면 추적 보정

- TargetSurfaceUtility를 추가해 플레이어와 적의 실제 충돌 표면 기준으로 거리, 방향, 목적지를 계산

- 플레이어 이동과 적 루트모션, 추적 로직에서 접촉 시 수평 이동을 제한해 겹침과 밀어내기 문제를 완화

- 드로그 AI 거리 판정 노드들이 표면 거리 기준을 사용하도록 맞춰 사거리 분기 오차를 줄임

Assets/_Game/Scripts/Skills/SkillController.cs

@@ -6,6 +6,7 @@ using UnityEngine;
 using Unity.Netcode;
 
 using Colosseum.Abnormalities;
+using Colosseum.Combat;
 using Colosseum.Player;
 
 #if UNITY_EDITOR
@@ -1266,20 +1267,26 @@ namespace Colosseum.Skills
             if (IsSpawned && !IsServer)
                 return;
 
-            Vector3 direction = currentTargetOverride.transform.position - transform.position;
-            direction.y = 0f;
+            Vector3 direction = TargetSurfaceUtility.GetHorizontalDirectionToSurface(transform.position, currentTargetOverride);
             if (direction.sqrMagnitude < 0.0001f)
                 return;
 
+            bool suppressRotationWhileContactingPlayer = currentSkill.UseRootMotion
+                && currentSkill.CastTargetTrackingMode == SkillCastTargetTrackingMode.FaceTarget
+                && enemyBase.IsTouchingPlayerContact;
+
             if (currentSkill.CastTargetTrackingMode == SkillCastTargetTrackingMode.FaceTarget ||
                 currentSkill.CastTargetTrackingMode == SkillCastTargetTrackingMode.MoveTowardTarget)
             {
-                Quaternion targetRotation = Quaternion.LookRotation(direction.normalized);
-                float rotationSpeed = Mathf.Max(0f, currentSkill.CastTargetRotationSpeed);
-                if (rotationSpeed <= 0f)
-                    transform.rotation = targetRotation;
-                else
-                    transform.rotation = Quaternion.RotateTowards(transform.rotation, targetRotation, rotationSpeed * 360f * Time.deltaTime);
+                if (!suppressRotationWhileContactingPlayer)
+                {
+                    Quaternion targetRotation = Quaternion.LookRotation(direction.normalized);
+                    float rotationSpeed = Mathf.Max(0f, currentSkill.CastTargetRotationSpeed);
+                    if (rotationSpeed <= 0f)
+                        transform.rotation = targetRotation;
+                    else
+                        transform.rotation = Quaternion.RotateTowards(transform.rotation, targetRotation, rotationSpeed * 360f * Time.deltaTime);
+                }
             }
 
             if (currentSkill.CastTargetTrackingMode != SkillCastTargetTrackingMode.MoveTowardTarget || currentSkill.UseRootMotion)
@@ -1290,7 +1297,8 @@ namespace Colosseum.Skills
                 return;
 
             float stopDistance = Mathf.Max(0f, currentSkill.CastTargetStopDistance);
-            if (direction.magnitude <= stopDistance)
+            float surfaceDistance = TargetSurfaceUtility.GetHorizontalSurfaceDistance(transform.position, currentTargetOverride);
+            if (surfaceDistance <= stopDistance)
             {
                 navMeshAgent.isStopped = true;
                 navMeshAgent.ResetPath();
@@ -1298,7 +1306,7 @@ namespace Colosseum.Skills
             }
 
             navMeshAgent.isStopped = false;
-            navMeshAgent.SetDestination(currentTargetOverride.transform.position);
+            navMeshAgent.SetDestination(TargetSurfaceUtility.GetClosestSurfacePoint(transform.position, currentTargetOverride));
         }
 
         /// <summary>